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Bridgeless Filterless Neutral-Point-Clamped Resonant AC/DC Converteropen access
- Authors
- Kim, Myeong-Hwan; Park, Jae-Woong; Kim, Minsung
- Issue Date
- Sep-2023
- Publisher
- IEEE
- Keywords
- AC-DC power converters; Capacitors; High efficiency; Inductors; input current harmonics; low voltage stress; power-conversion unit; push-pull resonant converter; Stress; Switches; Transformers; Voltage
- Citation
- IEEE Transactions on Industrial Electronics, v.70, no.9, pp 8895 - 8906
- Pages
- 12
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE Transactions on Industrial Electronics
- Volume
- 70
- Number
- 9
- Start Page
- 8895
- End Page
- 8906
- ISSN
- 0278-0046
1557-9948
- Abstract
- In this article, we present bridgeless filterless neutral-point-clamped (NPC) resonant ac/dc converter. By using the push-pull transformer itself, with the primary-side switching modulation fixed at 0.5, the proposed ac/dc converter accomplishes theoretically zero input-current ripple and so does not need the extra input filter. Semi-bridgeless configuration reduces the conduction loss associated with an input full-bridge diode rectifier. The resonant NPC structure much reduces the voltage stress at turn-off instant; this aspect reduces the turn-off loss occurred at the secondary-side switches. Therefore, the proposed converter features low cost, high power density, and high efficiency. A prototype with 1-kW output power is implemented to verify the superior properties of the proposed ac/dc converter. IEEE
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